Is AD 2020-25689 a recurring Airworthiness Directive?

No — AD 2020-25689 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2020-25689 apply to?

AD 2020-25689 applies to Textron Aviation, Inc., Cessna Aircraft Company — models 525, 525A, 525B. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-25689

one-time

AD 2020-25689 · 2020-11-23 · airframe

Airworthiness Directives; Textron Aviation, Inc., (Type Certificate Previously Held by Cessna Aircraft Company) Airplanes

What this AD requires

The FAA is superseding Airworthiness Directive (AD) AD 2019- 08-13 for Textron Aviation, Inc., (type certificate previously held by Cessna Aircraft Company) Models 525, 525A, and 525B airplanes with Tamarack Aerospace Group (Tamarack) active load alleviation system (ATLAS) winglets installed in accordance with Supplemental Type Certificate (STC) SA03842NY. AD 2019-08-13 was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as malfunction of the ATLAS. This AD results from the identification of corrective actions that, if implemented, allow operators to reactivate the ATLAS and restore operations to normal procedures. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2020-25689 applies to

MakesTextron Aviation, Inc.Cessna Aircraft Company

Models525, 525A, 525B

Applies only to airplanes with Tamarack Aerospace active load alleviation system (ATLAS) winglets installed in accordance with Supplemental Type Certificate SA03842NY.

Whether AD 2020-25689 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2020-25689 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.